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		<title>three.js webgpu - instance uniform</title>
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		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - instance uniform
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.webgpu.js",
					"three/tsl": "../build/three.webgpu.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import { nodeObject, uniform, cubeTexture } from 'three/tsl';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

			import { TeapotGeometry } from 'three/addons/geometries/TeapotGeometry.js';

			import Stats from 'three/addons/libs/stats.module.js';

			class InstanceUniformNode extends THREE.Node {

				constructor() {

					super( 'vec3' );

					this.updateType = THREE.NodeUpdateType.OBJECT;

					this.uniformNode = uniform( new THREE.Color() );

				}

				update( frame ) {

					const mesh = frame.object;

					const meshColor = mesh.color;

					this.uniformNode.value.copy( meshColor );

				}

				setup( /*builder*/ ) {

					return this.uniformNode;

				}

			}

			let stats;

			let camera, scene, renderer;
			let controls;

			const objects = [];

			init();

			function init() {

				const container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 4000 );
				camera.position.set( 0, 200, 1200 );

				scene = new THREE.Scene();

				// Grid

				const helper = new THREE.GridHelper( 1000, 40, 0x303030, 0x303030 );
				helper.position.y = - 75;
				scene.add( helper );

				// CubeMap

				const path = 'textures/cube/SwedishRoyalCastle/';
				const format = '.jpg';
				const urls = [
					path + 'px' + format, path + 'nx' + format,
					path + 'py' + format, path + 'ny' + format,
					path + 'pz' + format, path + 'nz' + format
				];

				const cTexture = new THREE.CubeTextureLoader().load( urls );

				// Materials

				const instanceUniform = nodeObject( new InstanceUniformNode() );
				const cubeTextureNode = cubeTexture( cTexture );

				const material = new THREE.MeshBasicNodeMaterial();
				material.colorNode = instanceUniform.add( cubeTextureNode );
				material.emissiveNode = instanceUniform.mul( cubeTextureNode );

				// Geometry

				const geometry = new TeapotGeometry( 50, 18 );

				for ( let i = 0, l = 12; i < l; i ++ ) {

					addMesh( geometry, material );

				}

				//

				renderer = new THREE.WebGPURenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				container.appendChild( renderer.domElement );

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 400;
				controls.maxDistance = 2000;

				//

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize );

			}

			function addMesh( geometry, material ) {

				const mesh = new THREE.Mesh( geometry, material );

				mesh.color = new THREE.Color( Math.random() * 0xffffff );

				mesh.position.x = ( objects.length % 4 ) * 200 - 300;
				mesh.position.z = Math.floor( objects.length / 4 ) * 200 - 200;

				mesh.rotation.x = Math.random() * 200 - 100;
				mesh.rotation.y = Math.random() * 200 - 100;
				mesh.rotation.z = Math.random() * 200 - 100;

				objects.push( mesh );

				scene.add( mesh );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function animate() {

				for ( let i = 0, l = objects.length; i < l; i ++ ) {

					const object = objects[ i ];

					object.rotation.x += 0.01;
					object.rotation.y += 0.005;

				}

				renderer.render( scene, camera );

				stats.update();

			}

		</script>

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